The O-exchange reaction between CO2+ and CO is triggered by two different entrance channels in 13C-labeled systems. The unimolecular dissociation of the C13CO3+ reactive intermediate is investigated at varying energies by mass spectrometric techniques. An almost “one-way” O-exchange at energies close to the dissociation threshold discloses a remarkably large intramolecular 12C/13C kinetic isotope effect ranging from 6.0 to 7.3 ± 0.5.
Isotope effect in isotope-exchange reactions: evidence for a large 12C/13C kinetic isotope effect in the gas phase / DE PETRIS, Giulia; Troiani, Anna. - In: JOURNAL OF PHYSICAL CHEMISTRY. A, MOLECULES, SPECTROSCOPY, KINETICS, ENVIRONMENT, & GENERAL THEORY. - ISSN 1089-5639. - STAMPA. - 112:12(2008), pp. 2507-2510. [10.1021/jp710634p]
Isotope effect in isotope-exchange reactions: evidence for a large 12C/13C kinetic isotope effect in the gas phase
DE PETRIS, GIULIA;TROIANI, Anna
2008
Abstract
The O-exchange reaction between CO2+ and CO is triggered by two different entrance channels in 13C-labeled systems. The unimolecular dissociation of the C13CO3+ reactive intermediate is investigated at varying energies by mass spectrometric techniques. An almost “one-way” O-exchange at energies close to the dissociation threshold discloses a remarkably large intramolecular 12C/13C kinetic isotope effect ranging from 6.0 to 7.3 ± 0.5.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
